Aggressive squamous cell carcinoma (SCC) refers to SCC that is large, deep, recurs frequently, or spreads (metastasizes) to lymph nodes or other organs, posing a significant health risk, often due to factors like immunosuppression or location (e.g., head/neck). While most early SCC is curable, aggressive forms require prompt, often multidisciplinary treatment, including surgery, radiation, and sometimes systemic therapies, as they can become disfiguring or life-threatening if neglected.
Aggressive squamous cell carcinoma refers to a form of skin cancer that tends to grow faster, penetrate deeper into the skin, and has a higher likelihood of spreading to lymph nodes or distant organs compared to typical SCC.
SCCs can appear as thick, rough, scaly patches that may crust or bleed. They can also resemble warts, or open sores that don't completely heal. Sometimes SCCs show up as growths that are raised at the edges with a lower area in the center that may bleed or itch.
Squamous cell carcinoma rarely metastasizes (spreads to other areas of the body), and when spreading does occur, it typically happens slowly. Indeed, most squamous cell carcinoma cases are diagnosed before the cancer has progressed beyond the upper layer of skin.
Location on the Body
Squamous cell carcinomas that develop on high-risk areas of the body tend to behave more aggressively. These areas include the ears, lips, nose, scalp, fingers, and genitals, as well as sites where the skin is already damaged by chronic inflammation, burns, or scars.
Metastatic squamous neck cancer with occult primary is a disease in which squamous cell cancer spreads to lymph nodes in the neck and it is not known where the cancer first formed in the body. Signs and symptoms of metastatic squamous neck cancer with occult primary include a lump or pain in the neck or throat.
High-risk human papillomavirus (HR HPV) is associated with oropharyngeal squamous cell carcinoma (OPSCC), which is rising.
Treatment should happen as soon as possible after diagnosis, since more advanced SCCs of the skin are more difficult to treat and can become dangerous, spreading to local lymph nodes, distant tissues and organs.
They stretch down from the oral cavity into the esophagus and lungs; they can be found in the cervix, anus and bladder, too. Eventually, the surface lining changes, though, and that's where you start getting into adenocarcinomas. Are there any features common to all squamous cell carcinomas?
Some types of invasive ductal carcinoma are aggressive. This means the cancer usually grows and spreads quickly, and it is often harder to treat. Hormone receptor status can also help us determine if a cancer is aggressive.
Signs and symptoms of squamous cell skin cancer
They can also develop in scars or skin sores elsewhere. These cancers can appear as: Rough or scaly red (or darker) patches, which might crust or bleed. Raised growths or lumps, sometimes with a lower area in the center.
Skin cancer occurs when skin cells grow abnormally, usually from too much exposure to ultraviolet (UV) radiation from the sun. The 3 main types of skin cancer are basal cell carcinoma (BCC), squamous cell carcinoma (SCC) and melanoma — melanoma is the most dangerous type.
In general, the squamous cell carcinoma survival rate is very high—when detected early, the five-year survival rate is 99 percent. Even if squamous cell carcinoma has spread to nearby lymph nodes, the cancer may be effectively treated through a combination of surgery and radiation treatment.
Basal and squamous cell carcinoma are two distinct types of skin cancer, each with its characteristics and potential consequences. While BCC tends to grow slowly and rarely metastasize, SCC is more aggressive and has a higher propensity to spread.
Treatment overview
In July 2021, the FDA expanded this approval to include SCC that is locally advanced and not curable by radiation or surgery. In 2024, the FDA approved cosibelimab-ipdl (UnloxcytTM) for adults with locally advanced or metastatic squamous cell carcinoma that is not curable with surgery or radiation.
Symptoms of squamous cell carcinoma include skin changes like: A rough-feeling, bump or growth, which might crust over like a scab and bleed. A growth that's higher than the skin around it but sinks down (depression) in the middle. A wound or sore that won't heal, or a sore that heals and then comes back.
Sun-exposed areas such as the lower lip and ears are most likely to develop squamous cell carcinoma of the skin. Squamous cell carcinoma of the skin is a type of cancer that starts as a growth of cells on the skin. It starts in cells called squamous cells.
Many doctors will order a PET or CT scan once a squamous cell carcinoma diagnosis has been reached to ensure the cancer has not spread to other parts of the body and is contained within the layers of the skin. Your doctor may also test your lymph nodes near the tumor site.
Large size (>2 cm). Thick or deeply invasive lesion (>4 mm). Incomplete excision (<4 mm).
Squamous cell carcinomas appear as red scaly patches, scaly bumps, or open sores. Left alone, they become larger and destroy tissue on the skin. They can also spread to other areas of the body.
If squamous cell carcinoma spreads to the lymph nodes or other parts of the body, chemotherapy can be used alone or with other treatments, such as targeted therapy and radiation therapy. Targeted therapy. Targeted therapy uses medicines that attack specific chemicals in the cancer cells.
If you've been diagnosed with advanced squamous cell skin cancer, you will be cared for by a team of medical professionals. This team will include oncologists (cancer doctors).
Schistosoma haematobium is a proven carcinogenic agent that causes mainly bladder squamous cell carcinoma. This type of cancer has characteristic epidemiological, clinical and histopathological features with poor prognosis as compared to other urinary bladder cancers not associated with this parasite.
Spindle Cell Carcinoma. Spindle cell carcinoma is a rare and aggressive variant of squamous cell carcinoma, a type of non-melanoma skin cancer.
Over the past 20 years, high-risk human papillomavirus (HPV) infection has been established as a risk factor for developing head and neck squamous cell carcinoma, independent of tobacco and alcohol use.